State of Decay 2: Juggernaut Edition

In order to get this achievement you need to survive 49 total zombie waves in Daybreak cumulatively. If you die during a wave in multiplayer and respawn, that wave will not count.

This achievement will take multiple sessions, it really depends on how many waves you successfully complete each session. Each wave you survive every time you play counts towards your total.

Keep playing and you'll eventually get it.